December weather forecast
Glenns Ferry, ID

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Weather in December

The first month of the winter, December, is also an icy month in Glenns Ferry, Idaho, with an average temperature ranging between max 35.4°F (1.9°C) and min 24.4°F (-4.2°C).

Temperature

December tends to be the coldest month, with temperatures averaging a daily high of 35.4°F (1.9°C) and a low of 24.4°F (-4.2°C).

Humidity

In Glenns Ferry, the average relative humidity in December is 75%.

Rainfall

The month with the most rainfall in Glenns Ferry is December, when the rain falls for 8.1 days and typically aggregates up to 1.22" (31mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In December, it is snowing for 5.2 days. Throughout December, 2.44" (62mm) of snow is accumulated. In Glenns Ferry, during the entire year, snow falls for 17.7 days and aggregates up to 8.7" (221mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:53 am and sunset at 5:07 pm. On the last day of December, sunrise is at 8:12 am and sunset at 5:16 pm MST.

Sunshine

With an average of 6.1h of sunshine, December has the least sunshine of the year in Glenns Ferry.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Glenns Ferry. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

What are the coldest months in Glenns Ferry?

Glenns Ferry, Idaho, reaches its average lowest temperatures in December, measuring 35.4°F (1.9°C) at the peak and 24.4°F (-4.2°C) at the lowest.

How cold is December in Glenns Ferry?

The average high-temperature and low-temperature during December are 35.4°F (1.9°C) and 24.4°F (-4.2°C) respectively.

What is the average humidity in December in Glenns Ferry?

In December, the average relative humidity is 75%.

What is the wettest month in Glenns Ferry?

The month with the most rainfall in Glenns Ferry is December, when the rain falls for 8.1 days and typically aggregates up to 1.22" (31mm) of precipitation.

How many days does it rain in December in Glenns Ferry?

In Glenns Ferry, during December, the rain falls for 8.1 days and regularly aggregates up to 1.22" (31mm) of precipitation.

How many days does it snow in December in Glenns Ferry?

In Glenns Ferry, Idaho, during December, snow falls for 5.2 days and regularly aggregates up to 2.44" (62mm) of snow.

What is the month with the shortest days in Glenns Ferry?

December has the shortest days of the year in Glenns Ferry, with an average of 9h and 6min of daylight.

How many hours of daylight does Glenns Ferry have in December?

In Glenns Ferry, the average day length in December is 9h and 4min.

What time are sunrise and sunset in December in Glenns Ferry?

On the first day of December in Glenns Ferry, sunrise is at 7:53 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 5:16 pm MST.

What is the month with the least sunshine in Glenns Ferry?

December has the least sunshine of the year in Glenns Ferry, Idaho, with an average of 6.1h of sunshine.

How many hours of sunshine does Glenns Ferry have in December?

In Glenns Ferry, Idaho, the average sunshine duration in December is 6.1h.

What are the months with the lowest UV index in Glenns Ferry?

The months with the lowest UV index in Glenns Ferry are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in December in Glenns Ferry?

In Glenns Ferry, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Glenns Ferry, ID

Average temperature in December - Glenns Ferry, ID
  • Average high temperature in December: 35.4°F

The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is December (35.4°F).

  • Average low temperature in December: 24.4°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is December (24.4°F).

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Average pressure in December
Glenns Ferry, ID

Average pressure in December - Glenns Ferry, ID
  • Average pressure in December: 30.23"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in December
Glenns Ferry, ID

Average wind speed in December - Glenns Ferry, ID
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is April (9.2mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).

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Average humidity in December
Glenns Ferry, ID

Average humidity in December - Glenns Ferry, ID
  • Average humidity in December: 75%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is July (26%).

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Average rainfall in December
Glenns Ferry, ID

Average rainfall in December - Glenns Ferry, ID
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is December (1.22").
The driest month (with the least rainfall) is July (0.12").

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Average rainfall days in December
Glenns Ferry, ID

Average rainfall days in December - Glenns Ferry, ID
  • Average rainfall days in December: 8.1 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is July (3.1 days).

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Average snowfall in December
Glenns Ferry, ID

Average snowfall in December - Glenns Ferry, ID
  • Average snowfall in December: 2.44"

The month with the highest snowfall is January (2.99").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Glenns Ferry, ID

Average snowfall days in December - Glenns Ferry, ID
  • Average snowfall days in December: 5.2 days

The month with the highest number of snowfall days is December (5.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Glenns Ferry, ID

Average daylight in December / Average sunshine in December - Glenns Ferry, ID
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 6h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).

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Average sunshine days in December
Glenns Ferry, ID

Average sunshine days in December - Glenns Ferry, ID
  • Average sunshine days in December: 19.2 days

The month with the most sunshine days is July (25 days).
The month with the least sunshine days is March (16.5 days).

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Average UV index in December
Glenns Ferry, ID

Average UV index in December - Glenns Ferry, ID
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Glenns Ferry, ID

Average cloud cover in December - Glenns Ferry, ID
  • Average cloud cover in December: 36

The month with the most cloud cover is December (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in December
Glenns Ferry, ID

Average visibility in December - Glenns Ferry, ID
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Glenns Ferry, Idaho, USA

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